Mosquito Coil vs Liquid vs Spray: the Cost of Each Class
Decision details
Fits if: Buyers standing in the repellent aisle with a fixed budget who do not know which class is actually cheapest for their usage.
Main drawback: Per-night cost is derived arithmetic over registry rows, not a registry row itself; this page does not cover the device and service classes.
Compare: hours of use per night, zone (closed indoor/windy outdoor), refill cost versus starter cost, and sensitive occupants (children, asthma).
In this guide
Three classes, three cost patterns?
| Class | Counter cost | Cost pattern |
|---|---|---|
| Coils | RM4.39 (10 pieces) to RM8.99 (50 pieces) [source] [source] | cheap entry, continuous smoke |
| Liquid vaporiser | RM13.90 starter; RM14.66 refill [source] [source] | one counter cost, cheap per night |
| Aerosol spray | RM7-16 per can [source] [source] | cheapest to buy, expensive daily |
A Lotus’s retail capture shows 50-piece coils at RM8.59 [source] — inside the registry row strip, not outside it.
Coils: what does a pack cost and when do they win?
Coils win two contests: lowest entry price (from RM4.39 [source]) and session control — light it while sitting, put it out after. They lose in two places: small closed bedrooms with long-stay occupants (continuous smoke), and wind and rain that kill half the useful burn. Their best zones are porches, carports and short yard sessions.
Liquid: starter cost versus refill cost?
Liquid plays a two-figure game: RM13.90 for the starter set with the device [source], then RM14.66 per refill bottle [source]. The class’s strength is control — timers, fixed concentration, no open flame — and that is why it became the bedroom standard. Its second strength is per-night cost, broken out in the arithmetic section.
Spray: the shock tool, not the shield?
Sprays at RM7-16 per can [source] [source] act in seconds and run out of effect in minutes. Their role in a house is to clear a room before sleep or kill mosquitoes that came in after dusk; as continuous protection they are the most expensive class per night — used daily, a can empties within a month.
Per-night arithmetic: what does each class really cost?
Formula arithmetic over the rows above: a RM14.66 liquid refill [source] across roughly 45 8-hour nights = roughly 33 sen per night (formula: RM14.66 ÷ 45); electric mats RM10.99 for 90 pieces [source] = roughly 12 sen per night (RM10.99 ÷ 90) at one mat per night; a 10-piece coil box at RM4.39 [source] = roughly 44 sen per session (RM4.39 ÷ 10). The decision direction: full nights daily favour mats/liquid, short sessions favour coils, and sprays do not enter the daily count at all.
Zones: which class for which space?
Bedroom: liquid or mats with a timer — the best dose control. Porch and outdoors: coils, because the smoke disperses without filling occupants’ lungs. Kitchen and dining: a pre-sleep spray burst with ventilation after. Children’s zones: prioritise dose control and timers, not the cheapest class. For the wider method map — including fogging, UV and zappers — the master table belongs to the control method comparison table (BM).
The same fence applies to all three?
All retail classes operate under one legal fence: no disease-prevention claims are permitted on products [source]. And one biological honesty: Aedes mosquitoes bite in the daytime [source] — night classes protect your sleep, not your children’s afternoon play outside; for daytime hours, personal repellent layers and source control take over.
When are all three still not enough?
When the problem is a full yard or a premises — not one room — the discussion moves from the shelf to devices (the ladder at mosquito trap prices 2026 (BM)) and to services (the relay ladder at fogging service prices). The full retail price rows per class belong to the most effective mosquito repellent page.
Ready to work out your cheapest class?
Send your home layout and the hours of use per night — WhatsApp us — answered by a human in working hours. We sell none of the classes; we work out the cheapest for your usage pattern and say when all three are not the answer.
Frequently asked questions
Coil, liquid or spray — which is cheapest?
It follows the hours of use. Full nights daily: liquid — a RM14.66 refill [source] spans weeks of nights. One-to-two-hour outdoor sessions: coils from RM4.39 per box [source]. Immediate room clearing: sprays at RM7-16 per can [source] [source], the most expensive if used daily.
Are mosquito coils safe every night?
A burning coil releases continuous smoke in a closed space — for small bedrooms with long-stay occupants (children, asthma), the liquid class with a timer is more controlled; coils fit best in windy outdoor spots. The general fence stands: no class may be promised as disease protection [source].
Are liquid and electric mats the same thing?
Same principle (a heated evaporating substance), different form: a RM14.66 refill bottle [source] versus mats at RM10.99 for 90 pieces [source] — the per-night arithmetic in the section below breaks it.
Why is spray unsuitable as a daily shield?
Aerosol acts within seconds on mosquitoes in flight and its effect is gone minutes later; it is a shock tool, not a continuous layer — its cost climbs fast if misused as full-night protection.